Engine-governor



(No Model.)

B. W. ERICK-SON.

ENGINE GOVERNOR. v

Patented Oct. 26,1897.

Nrrn STATES ERICK WILHELM ERICKSON A'rn v FFIC , or BROOKLYN, NEW YORK.

ENGINE-GOVERNOR.

To all whom, it may concern:

Be it known that I, ERICK WILHELM ERICK- soN, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Engine-Governors, of which thefollowing is a specification.

My invention relates to the improvement of engine-governors whereby the rotation of the screwshaft is kept at a certain and defi nite speed, whether entirely submerged or wholly or partially raised out of water, by automatically regulating the admission of steam into the steam-chest. It also shuts off steam in case of the breaking of the shaft or any part of the machinery interfering with the revolution of the shaft.

Reference is had to the annexed drawings, forming a part of my specification.

Similar letters refer to similar parts in the several drawings.

Figure 1 shows a central sectional elevation of the governor and its connection with the steam-pipe leading from the boilers to the stean1-chest. Figs. 2 and 3 are vertical sectional views in larger size of the governor,

comprising the valve in two of its positions and the valve-chamber connected to steampipe.

' A is an iron receiver for holding compressed air; B B, the air-pumps for forcing air into the receiver; 0 O, the connecting-rods of the air-pumps; D, the wheel to which the rods are attached; E, an endless belt passing around wheel D and the pulley E on screw-shaft F.

G is a safety-valve on the air-receiver.

H is a valve for keeping a steady pressure of air in the receiver, with the pumps work ing at a certain and set speed by regulating the outflow of air from the tank.

I is a pipe through which air is forced into Patent No. 592,529, dated October 26, 1897.

96. Serial No. 607,369. (No model.)

steam being shut off in the pipe M by the lower section of the valve J To start the engine and set the screw -shaftrevolving, steam is allowed to pass from the pipe M through the small pipe 0, upon opening the valve P, into the chamber L up through the hole L to the top of the valve-chamber, and the same forces the valve-sections J J 2 downward until the mouth of the small pipe 0 is closed by the solid upper part of the valve section J and the lower section of valve J is forced below the steam-pipe M, as shown in Fig. 2. The valve P is now closed. As the screw-shaft revolves the air-pumps of the governor are set in motion and air is forced into receiver A. The regulating-valve H is set so as to create just sufficient pressure in pipe I to overcome the expansive power of the coiled spring K and to keep the piston J and valvesections J J in the position shown in Fig. 2 so long as the shaft revolves at the desired speed. If the revolution of the shaft becomes accelerated by the screw being totally or partially lifted from the water, the pumps working faster increase the pressure in the re ceiver A, and pipe I forcing the piston J and valve-sections J J downward until the steampipe M is partially or wholly closed, as shown in Fig. 3, the effect of which is to lessen or cut off the steam passing to the engine and so retard or stop the rotation of the screw. As soon as the working of the engine is reduced to its normal speed and the air-pressure reduced by the valve H the spring K draws the piston J and valve-sections J J 2 upward again in position shown in Fig. 2.

or accident to it or to the engine, the pressure of air in the receiver A and pipe I becoming less than normal the spring K will draw the piston J and valve-sections J J 2 back into the position shown in Fig. 1, entirely shutting off the steam. The small cock q is for letting out any accumulated water or steam which might interfere with the working of the valve-sections J J Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with an engine, its steam-supply pipe and a power-shaft rotated thereby, of an air-pump operated from said Should the shaft stop revolving by a break shaft and an airreservoir connected with and supplied from the pump, and air pipe and cylinder connected with the air-reservoir, a spring and air actuated piston in said cylinder, a chamber connected with the steam-supply pipe and a piston therein and means substantially as shown and described for actu- I ating the same by the spring and air actuated piston, and also by steam, whereby the steam in the engine-pipe is shut off or its admission regulated at pleasure, substantially as set forth.

and actuated by the power-shaft for supplyi ing air to act upon the piston to move the same and the valve-sections in the other di rection and means for supplying steam to act upon the valve-sections, substantially as set forth.

3. In a steam-engine governor, the combination with the steam-pipe M and the chamber connected therewith, of a steam-pipe 0 having a cock P and connected respectively to the said steam pipe and chamber, the valvesections J J 2 within said chamber, the section J having a recess L and a hole L an air-pipe I and piston-cylinder connected therewith and in line axially with the chamber of the valvesections, .a piston J and rod connecting the same with the valve -sections, a spring for actuating the parts in one direction and means actuated by the power-shaft for supplying air under pressure to actuate the piston J and parts connected therewith in the reverse direction, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 14th day of August, A. D. 1896.

ERICK WILHELM ERIOKSON. Witnesses:

FRED S. SHEPHARD, HOWARD CAMPBELL. 

